Air-forcing device



(No Model.) 2 Sheets-Sheet 2.

. G W LORD AIR FORGING DEVICE.

Patented Dec. 15, 189-1.

-UNITED STATES PATENT OFFICE.

GEORGE \V. LORD, OF BOSTON, MASSACHUSETTS.

AIR-FO'RCING DEVlCE.

SPECIFICATION forming part of Letters Patent No. 465,326, dated December 15, 1891.

Application filed April 3, 1891. Serial No. 387,540. (No model.)

To all wh oml it may concern:

Be it known thatI, GEORGE W. LORD,a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented new and usef nl Improvements in Air-Forcing Devices, of

partly shown in section.

which the following, taken in connection with the accompanying drawings, is a specification. v Th1s invention relates to improvements in air-forcing devices particularly designed for the proper ventilation of railroad-cars, although it may to equal advantage be used for the ventilation of public and private build ings, halls, school-houses, &c.

The object of the present invention is to provide a novel noiseless injector, by means of which air can be forced into and out of a compartment without producing an unpleasant hissing noise.

To accomplish this object my invention involves the features of construction and the combination or arrangement of devices hereinafter described and claimed, reference being made to the accompanying drawings, in which Figure 1 represents a side elevation of a railroadcar provided with my invention, Fig. 2 represents a plan of the car, showing its roof removed. Fig. 3 represents an enlarged horizontal section of the injector-pipe. Fig. 4: represents an end view of said injector-pipe as seen from X in Fig. 3. Fig. 5 represents a longitudinal section of the air-forcing pipe, and Fig.6 represents an enlarged vertical section of the air box or chamber. Fig. 7 represents a detail side view of the foul-air-deliverypipe.

Similar letters refer to similar parts wherever they occur on the difierent parts of the drawings.

A in Fig. 1 represents-the floor of a railroad-car, A its roof, and A one of its ends, as usual.

b is the axle of one of the truck-wheels constructed in the ordinary manner. I

C is an air box or receiver preferably located below the floor of the car, and into such box the air is forced by means of a suitable air-pu mp or air-forcer D, having a pipe (1 leading from it to the box 0, as shown in Fig. 1. The pump or air-forcer may be positively operated by mechanism from one of the wheelaxles, as shown in Fig. 1, in which I have shown a chain-wheel b, secured to the caraxle b, from which an endless chain E conveys the rotary motion to a chain-wheel F, secured to a shaft F, located in bearings preferably secured to the bottom of the car. To.

said shaft F is secured a pinion f, the teeth of which mesh in the teeth of the gear-wheel G, secured to the shaft g, which is located in I fine myself to this precise mechanism for actu-- ating the air forcer or pump, as this may be done in any othermanner, accor'ding'to circumstances, without departing from the essence of my invention.

The air-box C I is provided with an auto matic escape-valve for the purpose of allowing part of the air under pressure in the said box to escape if from any cause the air-pressure in it should exceed the normal desired one. In Fig. 6 I have shown one form of a safety-valve for this purpose, consisting of a spring 0, secured at one end to the box 0 and having avalve G at its free end adapted to close a perforation. O in .the wall of the box 0. By means of a regulating-screw O and nuts C the tension of the spring 0 may be adjusted relative to the air-pressure in the box 0, as is common in air-pressure devices. From the air-box C leads a pipe I to the injector-pipe K, through which the outer fresh air is forced into the upper portion of the car or apartment, as shown in Fig. 1. The pipe K extendsoutside of the car as a transverse or T-head K, the ends of which are covered with gauze or wire-netting '10 is, as shown in Fig. 3, so as to prevent dust, cinders, 850., from passing through said pipe K into the car or apartment. The air-pipe I terminates within the in j ector-pipe K as a flaring mouth I, within which is adjustably secured a tapering plug z, covered with cloth, plush, or suitable textile or fibrous material 1' for the purpose of forming a wall which deadens the noise of the escaping air from the mouth I as it passes into the delivery end of the injectorpipe K, which latter is lined on its interior With a loose flexible lining of cloth 1", Which extends from the delivery end of said pipe K to a place just back of the flaring mouth I of the air-pipe I, as shown in Fig. 3. As shown in Fig. 4, the air-delivery pipe K is square in cross-section and the tubular flexible cloth lining is so attached to the sides of the pipe that such lining is left loose and shaking, as

it Were, at the corners of the pipe for the purpose of causing the air to pass out Without noise. The plug 4; has attached to its outer end a screw-rod i, Which passes loosely through a bail i, secured to the end of the pipe I, and ,the said plug is longitudinally adjusted by means of a nut 11 as shown in;

Fig. 5. By this arrangement the outer pure air will be delivered free from dust, cinders,

&c., in a noiseless manner to ;t he interior of the car ,or apartment.

For the purpose ot' withdra ving the foul airfrom the car I connect to the lower part of ;the car a delivery-pipe L, havi-nga register g I Lting L Where it connects with the car, 7 and-having, preferably, a T-head L" with lateral delivery ends, as shown in Fig. 2.

-\Vi:'-l1i;n the pipe L is arranged an air-fencing;

pipe M, leading from the air-pressure box 0, for the purpose of creatinga vacuum in said V pipe L, and thus forcing outthefoulair from within the car. The mouth of theair-forcing P pe M is pro ide i eh jus abl phig m, of the same kind as used ,in the pipe so as to regulate the flow of the air into the p p 011 the p p K a d LI a e the respective slides or doors 1 L, which :may be Qpened whenever it is desired to adjust the po i ions of th taper ng plusm r lai t t e .delive -y-meu-hh f t e reslle i pipes l and M.

the arrangement as herein described a pr per am u t p air i e e e h t the carer room in a noiseless manner and the i feel eje t d n ea g th low-e inert-10. of the ,car' or room, substantialliy as hereinabove described.

Ha ti 1s hee f y described th nature, 9. strne h, a p ra o o my inven jl ish to secure by Letters Patent and ci a n? 1. 1n .a-Ventilating apparatus, the .comebin a- 1 tion, ith an n-for ing he hahismmf an del v ry pip an an ei -eeneu ing hine eX- I tend ng in o the a l ve -y pipe and ha ing a so fl x w at i d ie hars meehh i e dea ening h n i o the a r djs har hg i -t 5 the air-delivery pipe, substantially as de. scribed.

2. In a ventilating apparatus, the co nbination ,with an air-forcin g mechanism, of an airtion, with an air-forcing apparatus, ofi an air-,

delivery pipe containing an internal flexible lining, an air-conducting pipe having a fiarin g air discharge mouth locatedin a flexible lining of the air-delivery pipe, and a cone provided with a soft flexible covering and arranged in the flaringair-d-ischarge mouth for deadening the noise .of the air discharging into the air-deli very pipe, substantiallyasdescribed.

, 4. l naventilatin g apparatus-thecombination,withan air-forcing rnechanisnnof an airdel -ve y ripe on a ing an in e flexible hinaa ai -ee ie ue napir harms e flaring air-discharge mouth located in the flexible lining, a hai the n n e ti p p and ,conesupportedby the bail and having-a -s0 ft flexible covering arranged in the flanin g ai -di ha g m uth f r de n ng v1Bhe n e of the air discharging into the air-.glelivery pipe, substantially asdesoribed.

5. Ina ventilating apparatus, theicenrbina- L en, wi h an ai w r er Dwof an a -ree h-g looxO,c0nnected with the air-forcerand provided With a perforation 0 a rs pringiOfl -seu .ed (G9 t bo and pr de w h valve (3 for .elosing the perforatien, a set.-sc-re.w +;fi0r va ying the @pew ref theeplihaam ans r del v r ng the a r r m the a rwreeel ins b into h emina me be 5196 ven ilated,

substantially as described.

11 a veht a in appe ta e sthe combin tion, with an air-,forcer l), of an -a-in-recei-v ing hex eenh eted w he ai -f n er an mevided with a p f ation -9 a spring :0, :39 eem d i the h x and pr vi ed i h :0"-'fer. e$ hghepe fi naninj ete -e p hav n a fle i l l n hg at s del e 'yemoiuth a er' ereihg th he e .e -r noise s yinto the mpa tmen he-vent il te a secen-dary P le-e lead ng rom he air-receivi g h x, and a fou'l-a;ir-. de;li v,ery pipe leading from zthecorn- IIO 'p e t d hae te with the seconda y r p sub an a ly s dese d- In testimony whereof I have signed my t-wo subscribing witnesses, on this 30th .dayof March, A. D. 189 1.

. g GEORGE \V. LORD.

Witnesses:

ALBAN Anpnnn. ALICE A, PER INS,

I15 name to this specification, in the presence of 

